Determining the sysroot for the Android NDK succeeded.
The output was:
0
Microsoft (R) Build Engine version 16.8.2+25e4d540b for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

Build started 12/29/2020 3:49:22 PM.
Project "C:\Users\craig\WinProjects\optdep\build-android-vs\CMakeFiles\3.19.20201228-g6b1adad\VCXProjInspect.vcxproj" on node 1 (default targets).
SetBuildDefaultEnvironmentVariables:
  ANDROID_HOME=C:\Users\craig\AppData\Local\Android\Sdk
  ANT_HOME=
  JAVA_HOME=C:\Program Files\Android\jdk\microsoft_dist_openjdk_1.8.0.25
  NDK_ROOT=C:\Users\craig\AppData\Local\Android\Sdk\ndk\23.0.7045647
PrepareForBuild:
  Creating directory "ARM64\Debug\".
  Creating directory "ARM64\Debug\VCXProjInspect.tlog\".
InitializeBuildStatus:
  Creating "ARM64\Debug\VCXProjInspect.tlog\unsuccessfulbuild" because "AlwaysCreate" was specified.
PostBuildEvent:
  @echo CMAKE_SYSROOT=C:\Users\craig\AppData\Local\Android\Sdk\ndk\23.0.7045647\platforms\android-21\arch-arm64
  :VCEnd
  CMAKE_SYSROOT=C:\Users\craig\AppData\Local\Android\Sdk\ndk\23.0.7045647\platforms\android-21\arch-arm64
FinalizeBuildStatus:
  Deleting file "ARM64\Debug\VCXProjInspect.tlog\unsuccessfulbuild".
  Touching "ARM64\Debug\VCXProjInspect.tlog\VCXProjInspect.lastbuildstate".
Done Building Project "C:\Users\craig\WinProjects\optdep\build-android-vs\CMakeFiles\3.19.20201228-g6b1adad\VCXProjInspect.vcxproj" (default targets).

Build succeeded.
    0 Warning(s)
    0 Error(s)

Time Elapsed 00:00:00.93


The target system is: Android - 21 - aarch64
The host system is: Windows - 10.0.19041 - AMD64